Development of antifungal films based on low‐density polyethylene and thyme oil for avocado packaging

Pillai, Sreejarani Kesavan; Maubane, Lesego; Ray, Suprakas Sinha; Khumalo, Vincent; Bill, Malick; Sivakumar, Dharini

doi:10.1002/app.43045

Cited by 9 publications

(16 citation statements)

References 36 publications

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“…LDPE has only one mass loss event with an initial degradation temperature of 355 °C and a peak temperature around 465 °C ( T max ), which is attributed to polymer degradation. Pillai et al . obtained similar results for LDPE degradation (330 to 475 °C).…”

Section: Resultssupporting

confidence: 54%

“…The properties of low‐density polyethylene (LDPE) polymers, such as their high impact resistance, low toxicity, toughness, high flexibility, stability, low cost, and ease of processing, have led to many applications in various industrial and agricultural sectors, especially in food packaging . However, food products that are susceptible to oxidation will be exposed to oxygen when contained in LDPE packaging due to its low oxygen barrier properties .…”

Section: Introductionmentioning

confidence: 99%

“…Active packaging is an innovative concept that can be defined as the use of packaging materials that interact with the packaged food by positively modifying its sensory and nutritional properties. Examples are antioxidant and antimicrobial packaging, which can be obtained by adding natural compounds …”

Section: Introductionmentioning

confidence: 99%

“…developed a LDPE film to control the release of natural antioxidants and reduce lipid oxidation in fish. Pillai et al . demonstrated the efficacy of LDPE films incorporating thyme oil as active packaging for the reduction of fungal contamination.…”

Section: Introductionmentioning

confidence: 99%

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Bioactive efficacy of low‐density polyethylene films with natural additives

Moura

Souza

Oliveira

et al. 2018

J of Applied Polymer Sci

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Active packaging can be defined as packaging that includes additives that help to extend the shelf life of food; among the advantages of its use is the possibility to reduce the amount of additives added to the food during processing. The aim of this study was to develop, characterize, and apply active films of low‐density polyethylene, incorporating carotenoid and yerba mate extracts as active additives. Active films were obtained by extrusion and were characterized for water vapor permeability, thickness, color, and mechanical and thermal properties. The effectiveness of the films was evaluated using butter packed in the formulated films. There was a significant reduction in thickness, and mechanical, thermal, and water vapor barrier parameters of the films compared to the control. The concentration of additives directly influenced coloration and antioxidant and antimicrobial action of the films. The formulated films provided protection against oxidative action and inhibition of microbial growth. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46461.

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Section: Resultssupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bioactive efficacy of low‐density polyethylene films with natural additives

Moura

Souza

Oliveira

et al. 2018

J of Applied Polymer Sci

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“…According to Soroka (), the typical tensile strength of LDPE ranges from 4 to 16 MPa. According to Pillai and others (), addition of thyme EO into LDPE film caused a significant decrease in tensile strength because thyme oil acted as a plasticizer in the amorphous regions of the LDPE matrix. However, in this study, there was no significant difference ( P > 0.05) in tensile strength between the LDPE, printed LDPE, HNTs/CO film, and HNTs/CO/LBL film, indicating that CO loading did not affect the tensile strength of LDPE.…”

Section: Resultsmentioning

confidence: 99%

Development of Natural Insect‐Repellent Loaded Halloysite Nanotubes and their Application to Food Packaging to Prevent Plodia interpunctella Infestation

Kim

Park

Na³

et al. 2016

Journal of Food Science

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The aims of this study were to develop insect-proof halloysite nanotubes (HNTs) and apply the HNTs to a low-density polyethylene (LDPE) film that will prevent Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae), commonly known as Indian mealmoth, from infesting the food. Clove bud oil (CO), an insect repellent, was encapsulated into HNTs with polyethylenimine (PEI) to bring about controlled release of CO. Chemical composition and insecticidal effect of CO were examined. The Fourier transform infrared (FTIR) spectrum of encapsulated CO was confirmed. The surface charges of uncoated HNTs (HNTs/CO) and coated HNTs with PEI by the layer-by-layer (LBL) method (HNTs/CO/LBL) were determined to be -37.23 and 36.33 mV, respectively. HNTs/CO/LBL showed slow, controlled release of CO compared to HNTs/CO. After 30 d, the residual amounts of CO in HNTs/CO and HNTs/CO/LBL were estimated to be 13.43 and 28.66 mg/g, respectively. HNTs/CO/LBL showed the most sustainable repellent effect. HNTs applied to gravure printing ink solution did not affect mechanical, optical, or thermal properties of the developed film. Gravure-printed LDPE film containing HNTs/CO/LBL displayed the greatest preventive effect on insect penetration, indicating its potential for use as insect-resistant food packaging materials.

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A comprehensive feasibility study on the properties of LDPE‐Ag nanocomposites for food packaging applications

Bumbudsanpharoke¹,

Lee²,

Ko³

2017

Polymer Composites

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The intense recent interest in active food packaging with silver nanoparticles (AgNPs) is attributed to the extraordinary efficacies of the AgNPs against a broadspectrum of food-borne pathogens. A comprehensive study of silver nanocomposites was conducted to identify the effect of the AgNPs on the properties of low-density polyethylene (LDPE) for food packaging applications. The investigation included the study of the optical, thermal, mechanical, and barrier properties, as well as antimicrobial activity against Grampositive and Gram-negative bacteria. Upon addition of AgNPs in LDPE, LDPE-AgNP composite films became less transparent and more yellowish because of surface plasmon resonance vibrations of the AgNPs. The SEM, EDS, and TEM results revealed that spherical AgNPs were distributed on both surface and interior of the LDPE film. While these well-dispersed AgNPs enhanced the barrier properties of LDPE for both oxygen and water vapor, the incorporation of AgNPs impinged onto the thermal properties by reducing the thermal stability and the melting enthalpy of the LDPE film. In addition, LDPE-AgNP composite film showed effective antibacterial activity against Staphylococcus aureus and Escherichia coli. These findings suggest that the LDPE-AgNP composite film can be feasibly used in food packaging to preserve the food quality and extend the shelf-life of the product. POLYM. COM-POS., 00:000-000, used in food packaging to preserve the food quality and extend the shelf-life of the product. POLYM. COMPOS., 39:3178-3186, 2018. FIG. 2. FE-SEM images of surface and cross-sections of neat LDPE and LDPE-AgNP composite films: (a) neat LDPE; (b) LDPE-AgNP 3 ppm; (c) LDPE-AgNP 36 ppm; (d) LDPE-AgNP 75 ppm; and (e) LDPE-AgNP 240 ppm. [Color figure can be viewed at wileyonlinelibrary.com]

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Development of antifungal films based on low‐density polyethylene and thyme oil for avocado packaging

Cited by 9 publications

References 36 publications

Bioactive efficacy of low‐density polyethylene films with natural additives

Bioactive efficacy of low‐density polyethylene films with natural additives

Development of Natural Insect‐Repellent Loaded Halloysite Nanotubes and their Application to Food Packaging to Prevent Plodia interpunctella Infestation

A comprehensive feasibility study on the properties of LDPE‐Ag nanocomposites for food packaging applications

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